Results are presented on hyperon and antihyperon production in Pb-Pb, pPb and pBe collisions at 158 GeV/c per nucleon. Lambda, Xi and Omega yields have been measured at central rapidity and medium transverse momentum as functions of the centrality of the collision. Comparing the yields in Pb-Pb to those in pBe interactions, strangeness enhancement is observed. The enhancement increases with the centrality and with the strangeness content of the hyperons, reaching a factor of about 20 for the Omega in the central Pb-Pb collisions.
|Titolo:||Enhancement of hyperon production at central rapidity in 158 A GeV/c Pb-Pb collisions|
|Data di pubblicazione:||2006|
|Digital Object Identifier (DOI):||10.1088/0954-3899/32/4/003|
|Appare nelle tipologie:||1.1 Articolo in rivista|